Malcolm j



No Model.)

M. J. ROMINE & D. P. LEE.

Pos'r HOLE AUGER.

No. 288,288. Patented Aug. 14, 1883 N PU'ERS. PIuIo-Liihogriph". wnhin mn. D c

UNITED STATES PATENT OFFICE.

MALCOLM J. ROMINE AND DAVID P. LEE, OF NEVADAfMISSOURI.

POST-HdLE AUGEB.

SPECIFICATION formingpart of Letters Patent No. 283,283, dated August 14, 1883.

. Application filed Jane 1, 1883. (No model.)

To all whom it may concern Be it known that we, MALCOLM J. ROMINE "and DAVID I. LEE, of Nevada in the county of Vernon and State of Missouri, have invented certain new and useful Improvements in Post- Hole Augers; and we do hereby declare that the following is a full, clear, and exact description of theinvention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part .of this specification.

Figure 1 is a perspective view of the parts of the augerrletached, and Fig. 2 a side view of the parts together.

This invention relates to improvements in earth-augurs, and it consists in the construction hereinafter set forth.

In the annexed drawings, the letter A denotes the shaft of the auger, solid or hollow, and provided with a handle, a. At its lower end, a, this shaft has an enlargement, a forming a shoulder, (6 ,213 which is made an angular boss or seat, 00*, from which projects a threaded end, a I

The letter B designates the bit for removing the earth. This is made of sheet metal, cir'cular in form, and having a central angular opening, b, corresponding with the boss or seat a. In this bit is made a out, 0, running radially in from the circumference, as shown at c, and then diverging, forming the 'two slits c 0, giving this cut 0 a Y shape.

The edges D D along the radial cut 0 are to be beveled off, as shown, and bent so as to be out of 'line, giving the bit the spiral form clearly shown in 'Fig. 2. This bit is to be slipped over thelower end of the stem A, the opening b fitting over the seat a".

The letter E indicates a feeder having the internally-threaded center 6, to fit the threaded end a of the shaft A, and the spiral points 6' e, curving in the same direction. This spiral feeder-is screwed on the end of the shaft after I the bit is put in place, thus securing the latter, and the threads are arranged in such direction that in working the auger the tendency is to bind the feeder tighter on the shaft.

The use of this device of course is obvious. The spiral feeder opensthe ground ahead of the bit, giving the latter an easier entrance, especially when the ground is stony or, gravelly. The bit as seen is reversible, and .as one edge D is used the other is sharpened, so that the other edge used, and the dull one sharpened.

.We are aware that an earth-auger has been provided with a bit consisting of two semicircular plates secured together, and having their straight edges turned up so that there are slits having transverse slits at their inner ends.

Having described our invention, whatwe claim is-- I 1. The earth-auger shaft having the angular seat and threaded end, in combination with the bit having the angular opening, and the feeder having the threaded center, as set forth.

2. The bit B, consisting of a disk ofsheet. metal having the, slit 0 c c, the edges of the portion 0 being beveled, as set forth.

M. afnoinivn. 1). r. LEE.

Witnesses:

JOHN T. BIRDsEYE,

W. A. Fonsrnn.

running in from the periphery of the bit, and

8. The. shaft A, having the seat a and on one becoming dulled the bit is reversed, 

